One less-than-scintillating half of a season hasn’t changed Sandy Alderson’s outlook on the 2016 Mets.

“I still expect us to be a playoff team,” the Mets general manager told The Post on Thursday. “I know we’ve had some injuries, but I don’t see any reason at this point why we can’t overcome those, so the expectations haven’t changed.”

The Mets (47-41) will begin the post-All Star break on Friday in Philadelphia, trailing the NL East-leading Nationals by six games. In the wild-card race, Alderson’s crew is tied with the Marlins for the second spot, behind the Dodgers.

It’s hardly the kind of placement the Mets would have expected heading into the season, given the depth and talent of the starting rotation and proven returning pieces from last year’s National League championship team.

But David Wright and Matt Harvey were lost for the season to injuries — after performing at underwhelming levels — and Lucas Duda and Travis d’Arnaud missed extended stretches (with Duda still sidelined by a stress fracture in his back). Meanwhile, Steven Matz and Noah Syndergaard endured bone spurs that likely affected their performances.

But given the fact the Mets are 28th in the major leagues in scoring, averaging 3.81 runs, they are probably fortunate to still have a shot at reaching the postseason.

“The reality is the rotation is going to have to continue to pitch well,” Alderson said. “The bullpen is going to have to be above average and we have to score some runs.”

With Harvey out until 2017 after last week receiving a diagnosis of thoracic outlet syndrome, Alderson said it’s likely the Mets will have to fill the rotation spot from within until Zack Wheeler can return from Tommy John surgery rehab. Wheeler, in a best-case scenario, is still at least a month away from rejoining the team.

“It’s hard to say what is going to be available,” Alderson said, referring to the trade market. “But realistically I think it’s unlikely we would add anybody with real impact to the rotation.”

“As a practical matter it’s probably more likely we are able to obtain help there than any other areas,” Alderson said. “Part of the issue is making sure we have somebody legitimate in the seventh inning. [Addison] Reed and [Jeurys] Familia obviously have been very good.”

Though the Mets have been abysmal at times offensively, Alderson doesn’t envision making a splash by acquiring another bat, as he did at last year’s trade deadline when he landed Yoenis Cespedes.

“If you look at it overall, if we had hit a little better with runners in scoring position we would have improved our standing quite a bit,” Alderson said. “You look at it more in terms of the last week or 10 days, we were up and down.

“If you look at our record, we actually played as well against the good teams as we have against the poor teams. We need to play better against the lesser teams.”

Among those “lesser” teams is the Phillies — who still have 12 games remaining against the Mets, starting with Friday night’s matchup at Citizens Bank Park.

Manager Terry Collins hopes the Mets will use 2015’s second-half surge that ended in a pennant as a rallying cry for this season.

“We’ve been here before,” Collins said. “We’ve got guys that are beaten up a little bit, the break is going to help.

“Coming out of the break, obviously losing Harvey doesn’t help. But they are in a good spot. We’ve got some young players that are going to lean on the veteran guys that are in the clubhouse and you’ve got to keep your heads up.”